#5151BE#5151BE

#5151BE is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.7% C 0.167 H 278.4°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#5151BE
RGB	rgb(81, 81, 190)
HSL	hsl(240, 46%, 53%)
HSV	hsv(240, 57%, 75%)
CMYK	cmyk(57.4%, 57.4%, 0%, 25.5%)
CIE-LAB	lab(40.17, 31.82, -57.54)
CIE-LCH	lch(40.17, 65.75, 298.95°)
OKLab	oklab(49.7% 0.0245 -0.165)
OKLCH	oklch(49.7% 0.167 278.4)
XYZ	xyz(15.6271, 11.3508, 50.0727)
Luminance	0.1135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151BE #BEBE51

analogous

#5187BE #5151BE #8751BE

triadic

#5151BE #BE5151 #51BE51

tetradic

#5151BE #BE5187 #BEBE51 #51BE87

square

#5151BE #BE5187 #BEBE51 #51BE87

split-complementary

#5151BE #BE8751 #87BE51

monochromatic

#28286C #393999 #5151BE #7E7ECF #AAAADF

Accessibility & contrast

On white

6.42

#5151BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#5151BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151BE

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151BE	#FFFFFF	#000000	##FFFFFF
##5151BE	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C2

Deuteranopia (green-blind)

#005ABC

Tritanopia (blue-blind)

#0F6B7F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #5151be;
/* rgb */ color: rgb(81, 81, 190);
/* oklch */ color: oklch(49.7% 0.167 278.4);

Tailwind

colors: {
  custom: {
    50: '#8c82d2',
    500: '#5151be',
    950: '#000000',
  },
}

SCSS

$custom: #5151be;
$custom-light: #8c82d2;
$custom-dark: #000000;

JSON

{
  "hex": "#5151be",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 190
  },
  "hsl": {
    "h": 240,
    "s": 45.607,
    "l": 53.137
  },
  "oklch": {
    "l": 0.49699,
    "c": 0.16686,
    "h": 278.4
  },
  "luminance": 0.11352
}

Semantic roles & 50–950 ramp

primary

#5151BE

secondary

#CDCD9E

accent

#D553D5

background

#F9F7FD

surface

#F1EEFA

border

#CBC9D3

text

#0D0A14

muted

#7E7C83

Preview Lab

Preview with #5151BE

Body copy rendered with the generated semantic roles for this colour.

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